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AP Biology Course Summary Department: Science Semester 1 Learning Objective #1 Students will understand the basics of chemistry, the importance of the water molecule, how carbon is unique and form relates directly to function of molecules. Targets to Meet Learning Objective #1 Target 1: Molecules and Cells Chemical Context of Life o Chemical elements and compounds - matter consists of chemical elements in pure form and in combinations called compounds - life requires about 25 chemical elements o Atoms and Molecules - atomic structure determines the behavior of an element -atoms combine by chemical bonding to form molecules -weak chemical bonds play important roles in the chemistry of life -a molecules biological function is related to its shape -chemical reactions make and break chemical bonds Target 2: Water and the Fitness of the Environment o Effects of Water’s Polarity -hydrogen bonding -cohesion and adhesion of water molecules water moderates temperature on Earth -oceans and lakes don’t freeze solid (ice floats) water is the solvent of life o Dissociation of water molecules -organisms are sensitive to changes in pH -acid precipitation threatens the fitness of the environment Target 3: Carbon and the Molecular Diversity of Life: Structure and Function o The Importance of Carbon -organic chemistry is the study of carbon compounds -carbon atoms are versatile building blocks of molecules -variation in carbon skeletons contributes to the diversity of organic molecules o Functional Groups-contribute to molecular diversity of life-chem. elements of life (review) Target 4: Structure and Function of Macromolecules: Structure and Function o Polymer Principles-macromolecules are polymers -variety of polymers can be built from small set of monomers o Carbohydrates-Fuel and Building Material -sugars serve as fuel and carbon sources – polysaccharides have storage and structural roles o Lipids-Diverse Hydrophobic Molecules -store large amounts of energy -phospholipids are major components of cell membranes -steroids-cholesterol and certain hormones o Proteins-molecular tools of the cell -polymers of amino acids in a specific sequence function depends on specific conformation o Nucleic Acids-Information Polymers -store & transmit hereditary information-polymers of nucleotides-inheritance based on replication of DNA double helix -DNA & proteins Target 5: Introduction to Metabolism o Metabolism, Energy, and Life -metabolic pathways -energy transformation -two laws of thermodynamics –free energy -ATP powers cell work by endergonic and exergonic reactions o Enzymes: Regulation –speed up metabolic reactions by lowering energy barriers -substrate specific -active sites and shape –physical and chemical environment affect enzyme activity o Control of Metabolism -allosteric regulation -localization of enzymes within a cell helps order metabolism -emergent properties Timeline 6 Weeks © Liberty High School 2011 Learning Objective #2 Students will understand the basics of cell structure and function and its component parts. Targets to Meet Learning Objective #2 Target 1: Tour of the Cell o How We Study Cells -light and electron microscopes -prokaryotic and eukaryotic cell differences -internal membranes compartmentalize the functions of a eukaryotic cell o Nucleus and Ribosomes -genetic library -building cell’s proteins o Endomembrane System -endoplasmic reticulum –Golgi apparatus -lysosomes -vacuoles o Other Membranous Organelles -Peroxisomes –Mitochondria -Chloroplasts o Cytoskeleton -structural support, motility, and regulation o Cell Surfaces and Junctions -cell walls -extracellular matrix functions in support, adhesion, movement, and development -integrate cells into higher levels of structure and function Target 2: Membrane Structure and Function: Science as a Process o Membrane Structure -regulation of the internal cell environment -membrane models have evolved: science as a process -fluid mosaic model o Traffic Across Membranes –selective permeability -passive transport = diffusion -osmosis = passive transport of water -balancing water uptake and water loss -proteins facilitate passive transport of selected solutes -active transport = energy and concentration gradients -ion pumps and voltage across membranes -cotransport –exocytosis and endocytosis Timeline 1 Week Learning Objective #3 Students will understand the basics of cellular respiration, cellular energy formation and its interrelationship to photosynthesis in plants, and plant adaptations. Targets to Meet Learning Objective #3 Target 1: Cellular Respiration o Principles of Energy Harvest -catabolic pathways and energy transfer -ATP recycled for work -redox reactions release energy when electrons move -electrons fall from organic molecules to oxygen -fall of electrons ins stepwise, via NAD and the electron transport chain o Process of Cellular Respiration -glycolysis = glucose to pyruvate = coupled reactions -Kreb’s cycle = oxidation of organic molecules -Electron Transport Chain = ATP synthesis o Related Metabolic Processes -Fermentation in absence of oxygen -Glycolysis and Fermentation connect to many other pathways -feedback mechanisms control cellular respiration -evolution and the endosymbiotic hypothesis -negative and positive feedback mechanisms Target 2: Photosynthesis: a mechanism of energy transfer o Photosynthesis in nature -autotrophs = producers -chloroplast anatomy o Pathways of Photosynthesis -light reactions and ATP, NADPH -Calvin cycle = use of ATP, NADPH to convert CO2 to sugar -alternative mechanisms of carbon fixation in hot, arid climates –evolutionary similarities between photosynthesis and cell respiration are stressed Timeline 2 Weeks © Liberty High School 2011 Learning Objective #4 Students will understand the basics of cell reproduction, the formation of somatic/gametic cells, genetics and genetic disorders, regulation of traits and heredity, and gene repair. Targets to Meet Learning Objective #4 Target 1: The Cell Cycle o Roles of Cell Division -reproduction, growth, and repair -identical sets of chromosomes distributed to daughter cells o The Mitotic Cycle -interphase -P, M, A, T sequence -cytokinesis -mitosis in eukaryotes may have evolved from binary fission in bacteria o Regulation of the Cell Cycle -molecular control system -internal and external cues -cancer causes and control Target 2: Heredity and Evolution Meiosis and Sexual Life Cycles o Introduction to Heredity -offspring inherit chromosomes -asexual and sexual reproduction o Role of Meiosis in Sexual Life Cycles -fertilization and meiosis alternate in sexual life cycles chromosome reduction diploid to haploid -gametogenesis o Origins of Genetic Variation -independent assortment -crossing over -random fertilization evolutionary adaptation Target 3: Mendel and the Gene Idea: Continuity and Change o Eukaryotic chromosome structure vs. Prokaryotic chromosome structure o Mendel’s Discoveries -law of segregation -law of independent assortment o Extending Mendelian Genetics -incomplete dominance -codominance -multiple alleles pleiotropy –epistasis -polygenic inheritance -nature vs nurture -polygenic inheritance pedigree analysis –multifactorial disorders o Genetic Testing and Counseling -carrier recognition -fetal testing -newborn screening Target 4: Chromosomal Basis of Inheritance: Continuity and Change o Relating Mendel to Chromosomes –sex linked traits -crossing over -genetic maps -sex determination – x inactivation o Errors and Exceptions in Chromosomal Inheritance -aneuploidy -polyploidy -deletions, duplications, inversions, translocations Target 5: Molecular Basis of Inheritance o DNA as the genetic material: science as a process -Watson and Crick o DNA replication and repair -origins of replication, replication forks -elongation, leading and lagging strands -ligase, primers, SSB’s, helicase o Proofreading DNA repairing damage -telomeres and the ends of the Timeline 3 Weeks © Liberty High School 2011 Learning Objective #5 Students will understand the basics of protein synthesis and how “form equals function” as a continuing theme of all biology. Targets to Meet Learning Objective #5 Target 1: DNA molecule From Gene to Protein o Transcription –RNA structure, codons, template strand, promoters, transcription factors, termination o RNA modification in eukaryotic cells -introns, exons, promoters, TATA box, spliceosome, ribozymes, leaders, trailers, poly A tail o Translation -transfer RNA, anticodons, wobble, ribosomal RNA, E, P, A sites, elongation, termination o Signal peptides -polypeptide destination -mutations -RNA and the origins of life Timeline 1 Week Learning Objective #6 Students will understand the basic comparisons between viruses, bacterial and other single-celled organisms, gene expression and control of those genes while discovering their relationship to emergent diseases. Targets to Meet Learning Objective #6 Target 1: Genetics of Viruses and Bacteria o Genetics of Viruses -viral shapes, anatomy, and nuclear material -requirement of host cells and viral reproductive techniques -lytic cycle -lysogenic cycle -viroids and prions o Genetics of Bacteria -transformation -transduction -conjugation and plasmids -transposons o Control of Gene Expression -operons: the basic concept -trp operon: synthesis of repressible enzymes, promoter, operator, regulatory genes, corepressor -lac operon: synthesis of inducible enzymes, same as above o Environmental and Social Concerns in Microbiology Timeline 1 Week © Liberty High School 2011 Learning Objective #7 Students will understand the basics of molecular biology using gene expression and DNA fingerprinting techniques, along with testing food products for GMO’s via the use of Thermocyclers, PCR, gel electrophoresis and RFLP’s technology, and their ethical implications to humankind. Targets to Meet Learning Objective #7 Target 1: Organization and Control of Eukaryotic Genomes o Structure of Chromatin -successive levels of DNA packing o Genome Organization at the DNA Level -Repetitive DNA and other noncoding sequences – gene families have evolved by duplication of ancestral genes -gene amplification, loss, or rearrangement o Control of Gene Expression -eukaryotes express only a small fraction of their genes -control can occur at any step in the path from gene to protein -chromatin modifications affect the availability of genes for transcription o The Molecular Biology of Cancer -genetic changes -oncogene proteins and tumor suppressor proteins -multiple mutations Target 2: DNA Technology: science, technology, and society o DNA cloning -restriction enzymes used to make recombinant DNA -polymerase chain reaction technology o Analysis of Cloned DNA -restriction fragment analysis detects DNA differences that affect restriction sites -entire genomes can be mapped at the DNA level o Practical Applications of DNA technology -reshaping medicine and pharmaceutical industry offers forensic, environmental, and agricultural applications -raises important safety and ethical questions -societal implications (environmental and social concerns) of DNA technology Timeline 2 Weeks © Liberty High School 2011 Semester 2 Learning Objective #1 Students will understand the basics of Evolutionary Mechanisms, Darwinian Evolution, its theoretical implications on the evolution of populations, species, and the beginning of life itself. Targets to Meet Learning Objective #1 Target 1: Descent With Modification: Darwinian View of Life: Evolution as Foundation o Historical Context for Evolutionary Theory -western culture resists evolutionary views of life -Lamarck placed fossils in an evolutionary context o The Darwinian Revolution -evolution as the foundation of modern biological models and thought -the occurrence of evolution and natural selection as its mechanism o Evidence of Evolution -biogeography -the fossil record -comparative anatomy -embryology molecular biology Target 2: Evolution of Populations: Continuity and Change o Population Genetics -genetic structure of a population defined by its allele and genotype frequencies -Hardy Weinberg theorem describes a non-evolving population o Microevolution causes-genetic drift, gene flow, mutation, nonrandom mating, nat. selection o Genetic Variation, the Substrate for Natural Selection -genetic variation occurs within and between populations -mutation and sexual recombination generate genetic variation diploidy and balanced polymorphism preserve variation o Natural Selection as the Mechanism of Adaptive Evolution -evolutionary fitness -stabilizing, directional, or diversifying selection -sexual selection –natural selection cannot fashion perfect organisms Target 3: The Origin of Species o What is a Species? -the biological species concept emphasizes reproductive isolation prezygotic and postzygotic barriers isolate gene pools o Modes of Speciation -allopatric speciation: geographic isolation -sympatric speciation discussions of tempo: punctuated equilibrium o Origin of Evolutionary Novelty -most evolutionary novelties are modified versions of older structures -genes that control development play a major role in novelty -an evolutionary trend does not mean that evolution is goal oriented Target 4: Tracing Phylogeny o The Fossil Record and Geologic Time -sedimentary rocks are the richest source of fossils – absolute dating and radiometric dating -continental drift -history of life punctuated by mass extinctions followed by adaptive radiations o Phylogeny and Systematics -taxonomy employs a hierarchical system of classification branching pattern of a phylogenetic tree represents the taxonomic hierarchy -determining monophyletic taxa is key to classifying organisms according to their evolutionary history molecular biology provides powerful tools for systematics o The Science of Phylogenetic Systematics -phenetics increased the objectivity of systematic analysis -cladistic analysis uses novel homologies to define branch points on phylogenetic trees -phylogenetic systematics relies on both morphology and molecules -evolutionary trends are stressed Timeline 4 Weeks © Liberty High School 2011 Learning Objective #2 Students will understand the basics of Evolutionary history and Biological Diversity. Targets to Meet Learning Objective #2 Target 1: Early Earth and the Origin of Life o Introduction to the History of Life -life originated between 3.5 and 4.0 billion years ago major episodes in the history of life o Prebiotic Chemical Evolution and the Origin of Life -first cells may have originated by chemical evolution -abiotic synthesis of organic monomers is a testable hypothesis laboratory simulations of early Earth conditions -protobionts can form self assembly -RNA was probably the first genetic material = RNA evolution -origin of hereditary material made Darwinian evolution possible o The Major Lineages of Life -arranging the diversity of life in the highest taxa is a work in progress –five kingdom system, eight kingdom system, three domain system Target 2: Organisms and Populations Survey of the Diversity of Life This task is completed through the anatomy and physiology section of my course -the anatomy (plant and animal)that I teach is comparative anatomy that begins with processes such as the acquisition of energy or the exchange of gases and discusses how the various major classes of organisms meet these requirements -in the plant kingdom it includes bryophytes, lycophytes, horsetails and vascular plants such as gymnosperms and angiosperms -fungi and protozoa are included -invertebrates such as porifera, radiata, platyhelminthes (acoelomates), rotifera and Nematode (pseudocoelomates), mollusks, annelida, arthropoda (protostomes), echinodermata, chordate (deuterostomes), agnatha, chondricthyes, osteicthyes, amphibians, reptiles, birds, mammals In all the chapters, evolutionary mechanisms are identified and comparisons are made which show evolutionary processes Timeline 2 Weeks © Liberty High School 2011 Learning Objective #3 Students will understand the basics of Plant form and function as it relates to plant nutrition, reproduction and hormonal control systems through the following: Targets to Meet Learning Objective #3 Target 1: Plant Structure and Growth o The Angiosperm Body -root and shoot systems are evolutionary adaptations -structural adaptations equip plant cells for specialized functions -dermal, vascular, and ground tissue systems o Plant Growth -meristems = apical and lateral Target 2: Transport in Plants o Transport Mechanisms in Plants -selective permeability of membranes –proton pumps differences in water potential -symplast and apoplast -bulk flow o Absorption of Water and Minerals by Roots -root hairs, mycorrhizae -endodermis as a selective sentry o Transport of Xylem Sap -transpiration pull and the physical properties of water -the role of bulk flow o Control of Transpiration -guard cells mediate photosynthesis-transpiration compromise xerophyte adaptations o Translocation of Phloem Sap -sugar sources to sugar sinks -pressure flow Target 3: Plant Nutrition o Nutritional Requirements of Plants -macronutrients and micronutrients o Role of Soil in Plant Nutrition -soil characteristics -soil conservation o Nitrogen as a Plant Nutrient -metabolism of soil bacteria o Symbiosis of Plants and Soil Microbes -nitrogen fixation between roots and bacteria mycorrhizae fungus and roots o Parasitism and Predation by Plants -parasitic plants –carnivorous plants Target 4: Plant Reproduction and Development o Sexual Reproduction -sporophyte and gametophyte generations -pollination -ovary development and seed dispersal o Asexual Reproduction –vegetative propagation in agriculture Target 5: Control Systems in Plants o Plant Hormones -coordinate growth, development, and responses to environmental stimuli o Plant Movements -tropisms toward or away from stimuli o Daily and Seasonal Responses -circadian rhythms -photoperiodism Timeline 4 Weeks © Liberty High School 2011 Learning Objective #4 Students will understand the basics of Animal “form equals function” as it relates to nutritional needs, homeostasis, immune defenses mechanisms, endocrine systems, reproduction, development, sensory responses and motion through the following: Targets to Meet Learning Objective #4 Target 1: Animal Nutrition o Nutritional Requirements -heterotrophs, essential nutrients, carbon skeletons o Food Processing -ingestion, digestion, absorption, elimination o Specialized Compartments -oral cavity, pharynx, esophagus, stomach, small intestine, large intestine o Evolutionary Adaptations of Vertebrate Digestive Systems -structural adaptations often associated with diet -symbiotic microorganisms Target 2: Circulation and Gas Exchange o Circulation in Animals -gastro vascular cavity, diffusion –double circulation evolution arteries, veins, capillaries -transfer of substances between blood and interstitial fluid lymphatic system - blood components and physiology -cardiovascular disease o Gas Exchange -diffusion, tracheal systems, gills, lungs -diffusion down pressure gradients respiratory pigments and buffering capacity of blood Target 3: Body’s Defenses o Nonspecific Defenses -skin and mucous membranes -phagocytic cells o How Specific Immunity Arises -antigens o Immune Responses -cell mediated immune response humoral response o Immunity in Health and Disease -natural and artificial immunity -self and non self -HIV/AIDS Target 4: Controlling the Internal Environment o Regulation of Body Temperature -ectotherms and endotherms o Water Balance and Waste Disposal -nitrogenous waste production, osmotic gain and water loss o Excretory System -variations on a tubular theme –kidney and nephrons -nervous system and hormonal feedback -evolution of kidneys in different habitats Target 5: Chemical Signal in Animals o Endocrine System and Nervous System are related o Chemical Signals and Their Modes of Action -binding to plasma membrane proteins -steroid hormones, thyroid hormones -hypothalamus, pituitary gland, pineal gland Target 6: Nervous System o Nature of Neural Signals -membrane/action potentials, tetanus -synapses and neural integration o Organization of Nervous System -centralization and cephalization -sympathetic and parasympathetic o Structure and Function of Vertebrate Brain -major regions and function Target 7: Motor Mechanisms Movement and Locomotion -skeletons -myosin/actin -calcium ions and regulatory proteins Timeline 4 Weeks © Liberty High School 2011 Learning Objective #5 Students will understand the basics of Ecology and the Biosphere as it relates to behavioral biology, population growth and sustainability, ecosystems and environmental conservation through the following: Targets to Meet Learning Objective #5 Target 1: Ecology and the Biosphere: Interdependence in Nature o Abiotic and Biotic Factors o Biomes/Trophic Levels o Energy Flow/Competition/Symbiosis Target 2: Population Ecology: Interdependence in Nature o Characteristics of Populations -density and spacing -life histories -resource limitation o Population Growth Models -exponential model -logistic model and carrying capacity o Limiting Factors -density dependence and density independence -human population growth patterns o Conservation Biology: Environmental and Social Concerns -water issues -air issues endangered species -cost/benefit analysis Timeline 2 Weeks Side Note: Major Assignments and/or Assessments: Due to the nature of the AP Bio Exam, AP Central (College Board) requires that AP Students complete the “dirty dozen” labs, especially in light, that one of the essays always relates to one of the chosen twelve. My labs are performed onsite during the evening. They typically occur about every two – three weeks (approximately six during the first semester and six second semester). Additional short labs are performed in class from time to time. The main labs performed are the following: Diffusion and Osmosis Enzyme Catalysis Mitosis/Meiosis Plant Pigments and Photosynthesis Cell Respiration Molecular Biology Genetics of Organisms Population Genetics and Evolution Transpiration Physiology of the Circulatory System Animal Behavior Dissolved Oxygen and Primary Productivity © Liberty High School 2011 Student Evaluation Students are evaluated on their performance on the unit exams, free-response questions, labs, and the homework they complete. I assign a certain number of points for each assignment students complete for credit. Their final grade is determined by the percentage of the total points earned during the report period. Periodicals, Medias & Movies (articles often from) … but not limited to the following: Scientific American, JAMA, Discover, Nature, National Geographic Local newspaper, Internet. Movies may include: o “Lorenzo’s Oil”, “Ghost in Your Genes” – Epigenome, and various other clips on genetics, cell division, respiration, ecology, etc. © Liberty High School 2011